HK1146263B - Elevator arrangement and method - Google Patents

Description

Elevator installation and method

Technical Field

The invention relates to an elevator installation for use during construction and to a method of constructing an elevator.

Background

When a high-rise building is constructed, an elevator is required before the building is completed. Either the operation during construction requires an elevator or when the lower floors are completed earlier than the other floors, in which case the elevator serving them needs to be available. As construction work progresses, the elevator must be able to serve the highest possible floor.

So-called jump lift (jump lift), in which the stroke height of the elevator rises in a stepwise manner as the construction work progresses, has been used during construction. The elevator machine room moves to a higher floor and the length of the hoisting ropes used is lengthened correspondingly. This normally requires that the elevator should be available as a whole and have all its properties. Thus, other components depending on the travel height, such as car cables, compensating ropes, overspeed governors, shaft electrification and shaft cables, should extend over the entire length of the final shaft.

Earlier solutions are known in which the extra length of the elevator hoisting rope needed in the jump lift is taken from the rope storage. A solution of this type for use of elevators during construction is disclosed in publication JP 7-9715. In this solution the elevator ropes are fitted to run from the elevator car to a traction sheave connected to the hoisting machine and from there via a diverting pulley provided for the counterweight to a machine room platform (level), after which the elevator ropes are arranged to run to a rope storage outside the elevator shaft. This solution does not comprise any kind of arrangement for compensating the mass of the hoisting ropes.

Compensation of the rope mass of the hoisting ropes is usually provided with a chain in jump hoisting, because the length of the chain can be lengthened by attaching a chain link of the desired length to an already in use chain. However, the chain structure has proved to have disadvantages in that, apart from other accidents, it limits the running speed of the elevator.

Some types of solutions are also known in the prior art, wherein the suggestion is given that the increase in the compensating mass required for jump lifting is solved by arranging metal ropes. The solution of our publication WO00/50328, which presents an elevator moving the elevator car with a suspension ratio of 1: 1, which is intended for use during construction, proposes that the increase in the length of the roping is obtained from the rope storage. The problem with this solution is that large tensions of the compensating ropes are introduced into the rope storage, for which reason the openable clamp must be dimensioned large. A further problem with said elevator is that the counterweight makes a shorter back and forth movement than the elevator car. This impairs, among other things, the balancing of the masses of the compensating ropes and the hoisting ropes at the time of a jump-lift, because at the time of a jump-lift the area of movement of the counterweight increases only by half the length of the jump-lift, while the area of movement of the car increases by the distance of the jump-lift. For this reason, the moving area of the counterweight must be changed/adjusted after the jump if it is desired to maintain the equilibrium position prevailing before the jump. Furthermore, the problem with the proposed solution is that the options for rope supply locations are very limited.

Disclosure of Invention

The object of the present invention is to eliminate the above-mentioned drawbacks of prior-art elevators. The object of the invention is to achieve an elevator installation which can offer, among other things, one or more of the following advantages:

with the device according to the invention, the increase in rope length required with increasing building height is easily achieved.

The tension of the rope clamp of the compensating rope can be made smaller than before.

The hoisting rope and the compensating rope are immediately in a position of equilibrium when moving to a new operating height.

The force exerted on the rope clamp acting as an aid for increasing the length of the rope can be reduced by a reduction of the rope tension. In addition, a weaker tension is exerted on the individual rope clamps during the jump of the elevator car. In such a case, the rope clamps can be dimensioned to accommodate smaller forces than before, among other things, and they can be manufactured cheaper and simpler.

The hoisting ropes that are not yet in use and the parts of the compensating ropes can be freely arranged in place, even in spaces outside the building.

In the construction-time roping the elevator car and the counterweight move back and forth the same length as each other, in which case in the case of jump hoisting the counterweight can be driven down to the bottom and the car raised to the height position of the new hoisting height, in which case the correct rope length is matched.

A device and a method are achieved with which the required rope lengthening is safe and easy to provide due to the reduced rope tension.

A simple, easy-to-use and safe method is achieved in the construction of high-rise/fast elevators in terms of their rope lengthening, without the rope speed of the final elevator becoming unfavorably large.

An arrangement and a method are achieved in which the roping during construction of the elevator can be formed lighter than the final roping of the elevator.

The object of the invention is to achieve an elevator for use during construction, which elevator is in particular inexpensive and safe in respect of its compensating roping arrangement and which can be easily raised to higher operating heights as the construction work progresses.

Some embodiments of the invention are also discussed in the description part and drawings of the present application. The inventive content of the application can also be defined in different ways. The inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or categories of advantages achieved. In this case, some of the attributes included in the technical solution may be superfluous from the point of view of separate inventive concepts. The features of the various embodiments may be combined for other embodiments within the scope of the basic inventive concept.

According to the invention there is provided an elevator installation for use during construction, which installation comprises an elevator car, hoisting roping, a hoisting machine installed to move the elevator car via the hoisting roping, and a counterweight, the hoisting machine preferably being disposed on a machine room platform at the top end of an elevator shaft, the elevator comprising compensating roping connected to a supply storage of the compensating roping, characterized in that the compensating roping is connected to the elevator car via a diverting pulley on the elevator car and to the counterweight via a diverting pulley on the counterweight;

so that the compensating roping is fixed in the elevator shaft, preferably at the bottom of the shaft, to a first clamp of the compensating roping and arranged to run from the first clamp via the diverting pulley provided in conjunction with the elevator car to a diverting pulley in the bottom of the elevator shaft and from there to a diverting pulley on the counterweight and from there to a second clamp in the shaft or on another firm part of the building, and the compensating roping is led from the first clamp to run to the supply storage of the compensating roping.

Preferably, the hoisting ropes are connected to a supply storage of the hoisting ropes.

Preferably the hoisting ropes are connected to the elevator car via diverting pulleys on the elevator car and to the counterweight via diverting pulleys on the counterweight.

Preferably, the compensating ropes and the hoisting ropes are connected to the elevator car and the counterweight with a suspension ratio of 2: 1.

Preferably, in the apparatus the hoisting roping of the elevator is fixedly connected to the machine room platform or to a first clamp of the hoisting roping fixed in the elevator shaft and is fitted to run via a diverting pulley fitted in conjunction with the elevator car to a traction sheave fitted in conjunction with the hoisting machine and to return to the machine room platform via a diverting pulley fitted for a counterweight and to run from there to a second rope clamp of the hoisting roping, and the hoisting roping is fitted to run from the first clamp of the hoisting roping and/or from the second clamp of the hoisting roping to a supply storage of the hoisting roping and the compensating roping is fixed to a first clamp of a compensating roping in the bottom part of the elevator shaft, the compensating roping running from the first clamp of the compensating roping or from the second clamp of the compensating roping to a supply storage of the compensating roping A memory.

Preferably the rope supply storage of the compensating roping and/or the rope supply storage of the hoisting roping is/are located outside the elevator shaft.

Preferably the compensating roping and/or the rope supply storage of the hoisting roping is arranged below the machine room platform.

Preferably the amount of rope required for the jump of the machine room platform is arranged to be supplied from the rope supply storage.

Preferably, the machine room platform is supported on a building.

Preferably, the machine room platform comprises the machine room or a part of the machine room when the building is at its final height.

Preferably, the rope supply storage of the hoisting roping is arranged on the machine room platform.

Preferably, the first clamp and/or the second clamp of the hoisting roping is/are fixed to the machine room platform.

Preferably, the first clamp and/or the second clamp of the hoisting roping is/are fixed to the elevator shaft or to some other firm structure of the building.

According to another aspect of the invention a method of constructing an elevator comprising an elevator car, hoisting ropes, a hoisting machine installed to move the elevator car via the hoisting ropes, a counterweight, compensating ropes, the hoisting machine is preferably placed on a machine room platform at the top end of the elevator shaft, the compensating roping is secured with a rope clamp, via which the compensating roping is connected to the supply storage of the compensating roping, and in which method one or more jumps of the machine room platform are performed, and the additional ropes of the compensating ropes required for the jump-up of the machine room platform are taken from the supply storage of said compensating roping, characterized in that the construction-time roping of the elevator is arranged such that the compensating roping is connected to the elevator car via a diverting pulley on the elevator car and to the counterweight via a diverting pulley on the counterweight; the compensating roping is fixed in the elevator shaft, preferably at the bottom of the shaft, to a first clamp of the compensating roping and arranged to run from the first clamp via the diverting pulley arranged in conjunction with the elevator car to a diverting pulley in the bottom of the elevator shaft and from there to a diverting pulley on the counterweight and from there to a second clamp in the shaft or on another firm part of the building, and the compensating roping is led from the first clamp to run to the supply storage of the compensating roping.

Preferably in the method the construction-time roping of the elevator is arranged such that the hoisting roping is connected to the elevator car via a diverting pulley on the elevator car.

Preferably the roping of the elevator is transferred by arranging the ropings of the elevator such that the ends of the hoisting ropes and/or the compensating ropes are fixed to the elevator car.

Preferably the roping of the elevator is converted to form the final roping of the elevator by arranging the ropings of the elevator so that both the hoisting roping and the compensating roping are connected to the counterweight at their first ends and to the elevator car at their other ends.

The elevator installation according to the invention for use during construction comprises an elevator car, hoisting roping, a hoisting machine fitted to move the elevator car via the hoisting roping, and a counterweight, wherein the hoisting machine is preferably disposed on a machine room platform at the top end of an elevator shaft, the elevator comprising compensating roping, which compensating roping is connected to a supply storage of the compensating roping. In which arrangement the compensating ropes are connected to the elevator car via diverting pulleys on the elevator car and to the counterweight via diverting pulleys on the counterweight. With the compensating roping, the forces acting on the rope clamp for lengthening the rope length required for an increase in the stroke height are reduced, due to the 2: 1 roping. In this case the reliability of the rope clamps is improved and they can be dimensioned to withstand smaller forces than before. In this way it is also possible to choose the rope supply location that is most suitable for the situation on the basis of the actual situation.

In the arrangement according to one embodiment of the invention the compensating ropes are fixed in the elevator shaft, preferably at the bottom thereof, to a first clamp of the compensating ropes and are arranged to run via a diverting pulley provided in conjunction with the elevator car to a second clamp in the shaft or on another firm part of the building, from which clamp the compensating ropes are guided to a supply storage of the compensating ropes.

In the method of constructing an elevator, which elevator comprises an elevator car, a hoisting roping, a hoisting machine provided to move the elevator car via the hoisting roping, a counterweight, compensating roping, which hoisting machine is preferably arranged on a machine room platform at the top end of the elevator shaft, which compensating roping is fixed with a rope clamp, via which the compensating roping is connected to a supply storage of the compensating roping, one or more jumps of the machine room platform are performed, and the additional rope required for a jump of the machine room platform is taken from the supply storage of the compensating roping. In the method the construction-time roping of the elevator is arranged such that the compensating roping is connected to the elevator car via a diverting pulley on the elevator car and to the counterweight via a diverting pulley on the counterweight. With this method (due to 2: 1 roping) the force acting on the rope clamp for lengthening the rope length required for the stroke height increase is reduced. In this case the reliability of the rope clamps is improved and they can be dimensioned to withstand smaller forces than before. In this way it is also possible to choose the rope supply location that is most suitable for the situation on the basis of the actual situation.

In the method according to one embodiment of the invention the roping of the elevator is converted to form the final roping of the elevator by arranging the ropings of the elevator so that both the hoisting roping and the compensating roping are connected to the counterweight at their first ends and to the elevator car at their other ends. In this way a 1: 1 elevator is achieved, which is suitable for use as a fast elevator, without overall compromising on inter-construction safety, smoothness of rope supply or smoothness of transition lift.

Drawings

In the following, the invention will be described in detail by means of some embodiments with reference to the attached drawings, in which

Fig. 1 shows a diagrammatic perspective view of an embodiment of an elevator installation according to the invention.

Fig. 2 shows a schematic view of an embodiment of the elevator installation according to the invention.

Fig. 3 shows the final elevator installation, which is converted from a construction-time elevator installation according to the method of the invention.

Detailed Description

Fig. 1 shows an elevator installation according to a preferred embodiment of the invention. The figure is schematic and only the most essential parts of the invention are shown therein. A machine room platform 22, in which the hoisting machine of the elevator is mounted, is fixed in a known manner to the top of the elevator shaft (not shown) in connection with jump hoisting. Machine room platform refers to a structure in the elevator shaft that handles the tasks of the machine room, e.g. a supporting framework structure consisting of metal beams. In the figure the machine room platform 22 is shown in dashed lines, above which the components shown are fixed to the machine room platform 22. The hoisting machine comprises an elevator motor-with any possible gear-and a traction sheave 40 rotated by the motor. The hoisting ropes 4 of the elevator are fixedly connected to the machine room platform 22 by means of a first clamp 36 and are arranged to pass round upwards via a diverting pulley 38 of the elevator car 2 and from there upwards to a traction sheave 40 and change its direction at the traction sheave downwards and to the counterweight. From there the hoisting ropes 4 go back to the machine room platform 22 via diverting pulley 54 on top of the counterweight 56, to which machine room platform the hoisting ropes 4 are fixed with the second clamp 24 after they have first passed around diverting pulley 34. Alternatively, the diverting pulley 34 may be located on the opposite side of the clamp 24. From the gripper 24 the hoisting ropes run from there along the edge of the elevator shaft or corresponding to the bottom of the elevator shaft and to the rope supply storage 8. This means that the roping 4 is associated with the rope supply storage 8. In this context, "rope passage" or "rope guided to passage" or the like refers to the position or arrangement of the rope relative to other components of the elevator, and not to the direction of movement of the rope.

The compensating roping 10 is led from the first clamp 32 of the compensating roping in the bottom of the elevator shaft to the diverting pulley 58 fixed to the bottom of the counterweight, around which it is passed further to the diverting pulley 30 fixed to the bottom of the elevator shaft, after which diverting pulley 30 the compensating roping 10 is led to the diverting pulley 28 fixed to the car 2, after which diverting pulley 28 the compensating ropes are led to the second clamp 26 of the compensating roping connected to the elevator shaft of the building or other structure. From the rope clamp 26, the compensating roping is led to the supply storage 16 leading to the compensating roping. In this way, the excess compensating roping after the gripper 26 is stored on the reel of the rope supply storage 16. Correspondingly, the part of the hoisting ropes 4 of the elevator that is not in use during construction is not in use on the other side of the clamp 24, so that the remaining slack roping is wound onto the reel of the rope supply storage 8. The rope supply storage 16 and the rope supply storage 8 are in the figure located at the bottom of the building, below the level of the machine room platform 22. It is also advantageous to arrange the rope supply storage 16 and/or the rope supply storage 8 outside the shaft. The clamps 24 and 26 in the embodiment of fig. 1 are mechanical clamps that can be opened and tightened, the ropes 10 and 4 currently in use, both comprising a rope or a plurality of ropes, can be locked into the clamps without cutting the ropes, so that each rope of the rope system leads at least to the rope supply storage via its clamp undamaged. Both the compensating ropes 10 and the hoisting ropes 4 of the elevator are fixed to both the elevator car 2 and the counterweight 56 with a 2: 1 suspension ratio. In the embodiment of fig. 1, the diverting pulleys 30 and 34 and the traction sheave 40 are mounted in the elevator shaft in a stationary position relative to the elevator shaft. Preferably at least some or all of the diverting pulleys 28, 30, 38, 34, 54 and 58 comprise bearings allowing rotation. It is also advantageous that at least diverting pulley 30 is arranged to move in the vertical direction so that the compensating ropes can be unwound in connection with jump hoisting.

In the apparatus of fig. 1, the ropes of the rope supply storage 16 can be supplied to the elevator apparatus via the first clamp 26 of the compensating roping. However, the invention can also be applied in the manner shown in fig. 2, in which the rope of the rope supply storage can be supplied via the second gripper 32 of the compensating roping. In this case, the second clamp 32 of the compensating roping is a mechanical clamp that can be opened and tightened in the manner described previously. In this case the compensating roping 10 is led from the clamp 26 in the bottom part of the elevator shaft to the diverting pulley fixed to the elevator car and after passing around it to the diverting pulley 30 fixed at the bottom of the elevator shaft, the compensating roping 10 is led around this diverting pulley 30 to the diverting pulley 58 fixed at the bottom of the counterweight 56, the compensating roping is led after passing around this diverting pulley 58 from above to the second rope clamp 32 of the compensating roping, which is located in the elevator shaft or in connection with other structures of the building, to which second rope clamp the compensating roping is fixed in such a way that it can be opened, and via which second rope clamp the compensating roping is led from the rope clamp to the storage 16 of the compensating roping. Also shown in fig. 2 is a feature of an embodiment of the invention in which the hoisting ropes 4 of the elevator run directly from the diverting pulley 54 of the counterweight to the second clamp 24 of the hoisting ropes on the machine room platform. In other respects, the apparatus shown in fig. 2 corresponds to the apparatus shown in fig. 1. Fig. 2 illustrates the principle of the invention in a simplified side view. The paths of travel of the elevator car, counterweight and roping are in practice preferably arranged to overlap in the elevator shaft, e.g. in the manner described in the solution of fig. 1. The components of the equipment secured in conjunction with the machine room platform 22 are drawn above the dotted line representing the machine room platform. In the embodiment shown in fig. 2 and also in fig. 1, the elevator shaft or equivalent surrounds the machine parts of the elevator in some way known per se. The rope supply storages 8 and 16 may be at least partly inside or outside the shaft or corresponding.

The lengthening of the rope of the overspeed governor during jump is preferably performed in a corresponding manner to lengthening the hoisting rope and the compensating rope. The rope of the overspeed governor can be fixed to a clamp on the car roof and the excess part of the rope can be stored in the rope supply storage of the overspeed governor on the car roof. Accordingly, it is advantageous to provide a car cable storage and a shaft cable storage for shaft cabling on the machine room platform 22 for the purpose of future travel heights. It is advantageous to arrange space for the control panel or for the elevator control unit on or near the machine room platform so that they can be lifted together when the machine room platform 22 is lifted upwards as the construction work progresses.

When the machine room platform of the elevator has to be lifted to the next level, the procedure described below is preferably followed. The elevator car is driven to the highest possible position by the service drive. The counterweight is in this case at the bottom and it is supported and locked in its position. After this the car is supported in its position, for example by locking the car to the guide rails or by some other reliable method. The rope clamps on the rope supply storage side of the hoisting roping and the compensating roping are detached, in which case additional rope is needed to be able to be supplied from the rope supply storage. The fixing of the rope of the overspeed governor is released so that the rope exceeding the governor can slip during the hoisting of the machine room. The wiring connected to the control panel of the elevator is disconnected.

The machine room platform of the elevator and its supporting beams are raised slightly with a crane or construction hoist (not shown), in which case the supporting means of the machine room platform structure can be removed. The machine room platform is lifted to the next level with a hoist or with some other suitable lifting method. During hoisting, the hoisting ropes and the compensating ropes are freely unwound from the reel of the rope supply storage. Likewise, the rope of the overspeed governor is unwound from the rope reel of the overspeed governor on the top of the elevator car. Accordingly, a corresponding amount of car cable and shaft cable is released from the car cable reel and the shaft cable reel on the machine room platform.

After the machine room platform is lifted, the supporting device of the machine room is started, and the supporting beam of the machine room is reliably supported on the building. The rope of the overspeed governor is fixed to the car roof. The elevator car is lifted to a higher level with the hoisting machine or crane, after which the hoisting roping and the compensating roping are tensioned to the correct tension and locked in their position by means of clamps. The counterweight is released and the car cable and the shaft cable are secured and connected to the control panel. After which the elevator is ready to serve a new floor.

When the building has reached its final height, the machine room platform used during construction, together with the hoisting machine and other machine room facilities, can, if desired, be permanently held there, in which case they comprise the corresponding components of the final machine room. The rope supply storage and other devices belonging to the work during construction are of course removed, since they are no longer needed.

In the embodiment of the figure the first clamp 36 of the hoisting roping is connected to the machine room platform 22. One advantage of this situation is that the used length of the hoisting roping of the elevator can be increased considerably in conjunction with the jump of the machine room platform, since the fixing point rises with the machine room platform 22 and the rope is pulled from the rope supply storage 8 when the second clamp 24 of the hoisting roping is opened. As an alternative, the first clamp 36 of the hoisting roping can be fixed to the elevator shaft.

In the embodiment shown in the figures the second clamp 24 of the hoisting roping is connected to the machine room platform 22. This has the advantage that the clamp 24 can be used from the machine room platform 22. As an alternative, the clamp 24 can be connected to the elevator shaft, which has the advantage that the fixing point is left in place during the jump lift, and that staff can safely perform opening in the same place and tightening after the jump lift. In this case the presence of diverting pulley 34 is preferred so that the roping can go via the machine room platform without problems.

According to one embodiment the hoisting ropes 4 of the elevator are arranged to be lengthened by supplying the hoisting ropes via the first clamp 36 of the hoisting ropes. In this case the difference with the embodiment of fig. 1 and 2 is, among other things, that the roping 4 is led from the supply storage 8 of the hoisting ropes to the gripper 36 instead of the gripper 24. In this case it is also advantageous to arrange a diverting pulley for the machine room platform 22 via which diverting pulley the roping coming from the diverting pulley 38 can run to the rope supply storage 8. In this case the second end of the hoisting ropes 4 is preferably fixed to the machine room platform 22. Of course, both ends of the hoisting roping 4 can be led to the rope supply storage, in which case the second end is led to the rope supply storage via the clamp 24 in the manner shown in the figure.

In the method according to the invention, one or more jumps of the machine room platform are preferably performed in the previously described manner, the additional rope needed for the jump of the machine room platform being taken from the supply storage of the compensating roping 16. In the method the construction-time roping of the elevator is arranged to compensate the roping connected to the elevator car 2 via diverting pulley 28 on the elevator car 2 and to the counterweight 56 via diverting pulley 58 on the counterweight 56. In this way, among other things, the stress exerted on the rope clamp is reduced. The lengthening of the ropes can also be performed via two clamps in any way that is most suitable for each elevator installation. The possibility of selection according to the specific situation is advantageous, since different types of solutions generally have both a good and a bad aspect, depending on the actual situation. The freedom of choice is advantageous because, among other things, an extra amount of rope runs through the entire suspension device during the lengthening of the rope. The problem with the supply of rope from the counterweight side is that the rope runs through the entire suspension device during the lengthening. On the other hand, the advantage is that the clamp 32 is easy and safe to open from the point of view of the tool falling without having to act under the car in its lifted position or enter into a dangerous area. It is preferable that this can be performed without any need to enter the elevator shaft, since due to the arrangement of the counterweight, the layout is simple and it is always easy to position the clamp in the edge area of the elevator shaft near the reel 16. An advantage of supplying the ropes via the clamp 26 is that the supply of new ropes can be arranged to take place such that not all compensating roping needs to be advanced when growing the ropes but only the ropes between the car and the clamp 26 are moved. In this way, among other things, the rope tension is easily maintained during the jump-in position by locking a part of the ropes in place (e.g. in fig. 1 the roping 10 can be locked to the diverting pulley 30), while the part of the ropes that is not locked in place can remain slack during the hoisting, the risk of the ropes jumping off the diverting pulley or otherwise causing problems due to their swaying is avoided. Tensioning the rope after a jump is also easy to perform in this case. On the other hand, the arrangement of the jig 26 may be difficult to perform in some cases so that it can be done safely.

In the method the construction-time roping is preferably additionally arranged so that the hoisting roping 4 is also connected to the elevator car 2 via diverting pulley 38 on the elevator car 2. In the method according to the invention, however, the roping of the elevator is changed after each jump lift by arranging the roping of the elevator so that the ends of the hoisting ropes and/or the compensating ropes are fixed to the elevator car. The roping of the elevator is preferably converted to form the final roping of the elevator by arranging the roping of the elevator so that both the hoisting roping and the compensating roping are connected to the counterweight at their first ends and to the elevator car at their other ends according to fig. 3. In this way the rope speed of the final elevator can be reduced and the elevator speed can be increased. The roping during construction of the elevator can also be formed lighter (thin ropes) than the final roping of the elevator by using the method described, firstly because of lower tensile stress and secondly because of lower speed, car load and smaller travel height.

Fig. 3 shows an elevator installation, preferably a high-rise elevator, which is converted from an elevator installation according to the method of the invention. The elevator installation is converted so as to have a 1: 1 hoisting ratio, in which case the car 2 is moved with the hoisting ropes 90 and the machine 70 in the machine room 60. The ends of the hoisting ropes 90 are likewise fixed to the elevator car 2 and to the counterweight 56. In this arrangement the ends of the compensating ropes 100 are fixed to the elevator car and counterweight and pass over the diverting pulleys at the bottom of the elevator shaft.

During the jump in the machine room there are many alternative embodiments for supporting the car and the counterweight. Likewise, the jump of the machine room and the jump of the car can be implemented in many alternative ways. The locking of the ropes during use during construction can also be carried out in practice in many ways. Likewise, the supply of rope from the rope supply storage can be arranged in different ways. The location of the rope supply storage can be chosen at each construction site according to the available opportunities.

In practice the machine room platform may comprise beams and other corresponding support structures, which do not necessarily together form a continuous plane but the structures may extend in the vertical direction to such a height that they form a frame-like support structure. Thus, the components shown in the figures above the machine room platform 22, which are fixed in connection with the machine room platform, such as diverting pulleys or clamps, may be arranged such that they may be located partly or wholly in the area defined by the machine room platform in the vertical direction or possibly below and/or above the machine room platform. However, the fixation is most preferably performed such that the components fixed in connection with the machine room platform are lifted together with the machine room platform 22 corresponding to the jump lift. It is also obvious that each roping may comprise one rope or a plurality of ropes. It is also obvious that within the scope of the inventive concept the diverting pulleys can also be arranged differently than shown in the figures. For example, the diverting pulleys 54 and 58 of the counterweight do not have to be above and below the counterweight. The presence of diverting pulley 34 is also not absolutely necessary, for example, in the embodiment in which the clamp 24 is fixed to the platform 22. In an embodiment of this type the hoisting ropes 4 can be led in the manner presented in fig. 2 directly from the diverting pulley 54 to the clamp 24, but from the clamp 24 directly to the rope storage 8. It is also obvious that there may be more diverting pulleys than those shown in the figures, for example to guide the ropes to follow a preferred path. It is also obvious that the invention can be used in solutions where both ends of the hoisting roping and/or the compensating roping are arranged to continue to the rope storage via their clamps, in which case both clamps of said roping can be opened and closed. It is also obvious that the openable and closable mechanical clamp can be any existing clamp, as long as it is capable of locking the rope without damaging it. The line may be arranged to be tensioned so as to be immovable, for example by means of a clamp provided with a thread. It is also obvious that the hoisting roping alternatives and compensating roping alternatives presented in the present application can be combined with each other.

It is obvious to the person skilled in the art that the invention is not limited to the embodiments described above, in which the invention is described by way of example, but that many adaptations and different embodiments of the invention are possible within the scope of the inventive concept.

Claims (19)

1. Elevator arrangement for use during construction, which arrangement comprises an elevator car (2), hoisting ropes (4), a hoisting machine installed to move the elevator car via the hoisting ropes (4), and a counterweight (56), which hoisting machine is disposed on a machine room platform (22) at the top end of an elevator shaft, which elevator comprises a compensating rope system (10) connected to a supply storage (16) of the compensating rope system, characterized in that the compensating rope system (10) is connected to the elevator car via a diverting pulley (28) on the elevator car and to the counterweight (56) via a diverting pulley (58) on the counterweight (56), so that the compensating rope system (10) is fixed to a first clamp (26) of the compensating rope system in the elevator shaft and is arranged to run from the first clamp (26) to the bottom of the elevator shaft via the diverting pulley (28) disposed in conjunction with the elevator car And from there to a diverting pulley (58) on the counterweight and from there to a second clamp (32) in the elevator shaft or on another firm part of the building, and the compensating roping is led from the first clamp (26) to the supply storage (16) of the compensating roping.

2. An arrangement according to claim 1, characterised in that the hoisting roping (4) is connected to a supply storage (8) of the hoisting roping (4).

3. Arrangement according to claim 1 or 2, characterized in that the hoisting ropes (4) are connected to the elevator car (2) via a diverting pulley on the elevator car and to the counterweight (56) via a diverting pulley (54) on the counterweight (56).

4. The arrangement as claimed in claim 1 or 2, characterized in that the compensating ropes and the hoisting ropes are connected to the elevator car and the counterweight with a suspension ratio of 2: 1.

5. An arrangement according to claim 2, characterized in that in the arrangement the hoisting ropes (4) of the elevator are fixedly connected to the machine room platform (22) or to a first clamp (36) of the hoisting ropes fixed in the elevator shaft and are fitted to run via a diverting pulley (38) mounted in conjunction with the elevator car (2) to a traction sheave (40) mounted in conjunction with the hoisting machine and return via a diverting pulley (54) fitted for a counterweight (56) around a traction sheave (40) to the machine room platform (22) and from there to a second rope clamp (24) of the hoisting ropes, and the hoisting ropes (4) are arranged to run from the first clamp (36) of the hoisting ropes and/or from the second clamp (24) of the hoisting ropes to the supply storage (8) of the hoisting ropes, and the compensating roping (10) is fixed to a first clamp (26) of the compensating roping in the bottom part of the elevator shaft, the compensating roping (10) going from the first clamp (26) of the compensating roping or from the second clamp (32) of the compensating roping to a supply storage (16) of the compensating roping.

6. An arrangement according to claim 2, characterised in that the rope supply storage (16) of the compensating roping (10) and/or the rope supply storage (8) of the hoisting roping (4) are/is located outside the elevator shaft.

7. Arrangement according to claim 2 or 6, characterized in that the compensating roping and/or the rope supply storage of the hoisting roping is arranged below the machine room platform (22).

8. An arrangement according to claim 2 or 6, characterized in that the amount of rope required for the jump of the machine room platform (22) is arranged to be supplied from the rope supply storage (8, 16).

9. An arrangement according to claim 1 or 2, characterized in that the machine room platform (22) is supported on a building.

10. An arrangement according to claim 1 or 2, characterised in that the machine room platform (22) comprises a machine room or a part of a machine room when the building is at its final height.

11. An arrangement according to claim 2 or 6, characterised in that the rope supply storage (8) of the hoisting roping (10) is arranged on the machine room platform (22).

12. An arrangement according to claim 5, characterised in that the first clamp (36) and/or the second clamp (24) of the hoisting roping is/are fixed to the machine room platform.

13. An arrangement according to claim 5, characterised in that the first clamp (36) and/or the second clamp (24) of the hoisting roping is/are fixed to the elevator shaft or to some other firm structure of the building.

14. An arrangement according to claim 1, characterized in that the compensating roping (10) is fixed to the first clamp (26) of the compensating roping at the bottom of the elevator shaft.

15. Method for constructing an elevator, which elevator comprises an elevator car (2), hoisting roping (4), a hoisting machine installed to move the elevator car via the hoisting roping (4), a counterweight (56), compensating roping (10), which hoisting machine is disposed on a machine room platform (22) at the top end of the elevator shaft, which compensating roping is fixed with rope clamps (26, 32), via which rope clamps (26, 32) the compensating roping is connected to a supply storage (16) of the compensating roping, and in which method one or more jumps of the machine room platform are performed and the additional rope of the compensating rope (10) required for a jump of the machine room platform is taken from the supply storage (16) of the compensating roping (10), characterized in that the roping during construction of the elevator is arranged so that the compensating roping is connected to the elevator car (2) via a diverting pulley (28) on the elevator car (2), and is connected to the counterweight (56) via a diverting pulley (58) on the counterweight (56); the compensating roping (10) is fixed to a first clamp (26) of the compensating roping in the elevator shaft and arranged to run from the first clamp (26) via the diverting pulley (28) arranged in conjunction with the elevator car to a diverting pulley (30) in the bottom part of the elevator shaft and from there to a diverting pulley (58) on the counterweight and from there to a second clamp (32) in the shaft or on another firm part of the building, and the compensating roping is led from the first clamp (26) to the supply storage (16) of the compensating roping.

16. Method according to claim 15, characterized in that in the method the construction-time roping of the elevator is arranged such that the hoisting roping (4) is connected to the elevator car (2) via a diverting pulley (38) on the elevator car (2).

17. Method according to claim 15 or 16, characterized in that the roping of the elevator is transferred by arranging the ropings of the elevator so that the ends of the hoisting ropes and/or the compensating ropes are fixed to the elevator car.

18. Method according to claim 17, characterized in that the roping of the elevator is converted to form the final roping of the elevator by arranging the ropings of the elevator so that both the hoisting roping and the compensating roping are connected to the counterweight at their first ends and to the elevator car at their other ends.

19. Method according to claim 15, characterized in that the compensating roping (10) is fixed to the first clamp (26) of the compensating roping at the bottom of the elevator shaft.